3 (also spline curve) Mathematics A continuous curve constructed so as to pass through a given set of points and have a certain number of continuous derivatives. Example sentences. 1  The data was therefore fit nonparametrically to a smooth curve using the Dierckx algorithm for cubic spline curve fitting.
Definition of Unearned Revenue in Accounting. Unearned revenue is the same thing as deferred revenue. In accounting, unearned revenue is a liability. It is a liability because even though a company has received payment from the customer, the money is potentially refundable and thus not yet recognized as revenue.
According to AccountingTools, unearned revenue accounts can be used to estimate the amount of income that a company expects to receive in a certain period. These types of revenue can come from anticipated sales, rental payments made in advance and prepaid insurance. Unearned revenue may also be denoted as prepaid revenue on a company's balance sheet. AccountingTools notes that unearned revenue accounts are liabilities rather than assets because the company is liable for the amount until the service is redeemed or the product is distributed.